package com.czc.filter;

import com.sun.org.apache.regexp.internal.RE;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.Date;

/*
    自定义全局过滤器
 */
@Component
public class MyLogGateWayFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("****come in MyLogGateWayFilter: "+new Date());

        //要求发过来的请求要有携带username参数
        String username = exchange.getRequest().getQueryParams().getFirst("username");
        if(username==null){
            System.out.println("用户为null,不合法");
            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
            return exchange.getResponse().setComplete();
        }


        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
